import re

# data = "hello.world.world23424"
# data = "12224@234sina.com"
# data = 1234567489
data = "c=995 python=996 cpp=990 4"

# result = re.match("hello", data)
# result = re.search(r"^hello.*24$", data).group()
# result = re.search(r"^\w{4,6}@(qq|sina).com$", data1).group()
# print(result)
#
# result = re.search(r"^(\d{3,4})-(\d{6,8}) \1-\2$", "0755-12345678 0755-12345678").group()
# print(result)

# result = re.findall(r"\d+", data)

# result = re.match(r"^(\d+)(\d){7}$","12345678").group(1,2)
# result = re.sub(r"[a-z]|=", "", data)
result = re.search(r"\d+", data).group()
print(result)